/Engine/Source/Runtime/RHI/Public/DynamicRHI.h
virtual void RHIMapStagingSurface_RenderThread ( class [FRHICommandListImmediate](API\Runtime\RHI\FRHICommandListImmediate) & RHICmdList, [FRHITexture](API\Runtime\RHI\FRHITexture) * Texture, uint32 GPUIndex, [FRHIGPUFence](API\Runtime\RHI\FRHIGPUFence) * Fence, void *& OutData, int32 & OutWidth, int32 & OutHeight )